Turret shaping machine for cigars



p 1944. H. H. WHEELER 2,357,369

' TURRET SHAPING MACHINE FOR CIGARS Original Filed July 16, 1938 ZSheets-Sheet 1 INVENTOR 3 HENRY H.WHEELER 25 BY /W ATTO-RNEY.

Sept. 1944- I H. WHEELER 2,357,369

TURRET SHAPING MACHINE FOR CIGARS Original Filed July 16, 1938 2 Sheets-Sheet 2 III/I INVENTOR HENRY H.WHEELER ATTORNEY Patented Sept. 5, 1944 UNITED STATES PATENT OFFICE 2,357,369 TURRET SHAPING MACHINE FOR CIGARS Henry. H. Wheeler, Brooklyn, N. Y., assig'nor to International Cigar Machinery Company, a corporation of NewJersey Original application July 16, 1938, Serial No; 219,509. Divided and this application August 21, 1940, Serial No. 353,469

" 19 Claims. (91.12147) co-pending application Serial Number 219,509,

filed in the United States Patent Ofiiceon July The chief object of the invention is to improve the operation of the machine described in my Patent No. 2,157,537. In the machine of the patent above referred to, raw cigar bunches are transferred manually from a bunch rolling apron by an operator at the loading station into open molds formed in the pockets of the intermittently revolving drum or turret provided for this purpose and shaping members or covers are then fitted into these molds and remain therein during at least one-half revolution of the turret. In one position along the path of travel of the turret, transfer arms lift a shaping cover from one of the closed molds containing a fully shaped cigar bunch and transfer it to a diametricallyopposite mold wherein is located an unshaped cigar bunch.

According to the present invention, mechanism has been provided for more efiiciently removing the covers from the molds and transferring them to cover applying position, hence it is an object of the invention to provide improved cover handling and transfer mechanism.

It is a further object of the invention to provide a cover transfer mechanism in which covers are aligned and centeredprior to their application to open molds in order to eliminate breakage of the transferarms. 7 7

a It is a further object to provide gripper mechanism on the armswhich travel with the turret for a'portion of its rotation during each cycle of the machine'in order that the transfer of covers from one mold to another may be more accurate and positive. V

The invention is further characterized by the provision of an improved latching device for ef-' fecting the movement of the cover transfer arms to and from mold cover removing and replacing erally receive these deposits may be kept clean by means of brushes or like mechanism.

It is a further object of the invention to provide a movable guard plate associated with the cover transfer arms which operates normally to prevent access of Waste material to machine parts and which is rendered inoperative by movement of thetran'sfer arms during each removal operation of a cover from a mold. It is a further object of the invention to pro vide means for more perfectly locating the cover transfer arms by the provision of adjustable abutments at the cover applying position which makes it possible to adjust the abutments and maintain them in adjustedposition at all times.

With these and other objectsnot' specifically mentioned in view, the invention consists in certain combinations and constructions which will be hereinafter fully described, and then; specifically set-forth in the claims hereunto; appended.

In the accompanying drawings which form a part of this specification, and in which like characters of reference indicate the same or like parts: I I

Fig. 1 is an end elevation partlyin section, of the improved shaper turret and the scrap disposal means associated therewith; A

Fig. 1a is a partial side elevation of the improved lockingmeans; V

Fig. 1b is a sectional end elevation of the locking means shown in Fig. 1a.; I

Fig. 2 is a sectional side elevation of the shaper turret, on line 2- 2 of Fig.1, including views from lines 2' of Fig. 1; g I

Fig. 2a is a cross-sectional View taken on line 2a of Fig. 5 showing a detailin the construction of the cover gripping mechanism;

Fig. 3 is a partial plan View from line 33 of Fig. 1 showing a detail of my invention;

V Fig. 4 is a partial side sectional elevation of Fig. 3; and

Fig. 5 is a fragmentary sectional view on an enlarged scale showing details of the cover holding and transferring mechanism.

The drum 29, which carriesth'e ing molds 30 in pockets 23 (Figs. 1 and 2) is intermittently rotated by mechanism, similar. to that shown in my" Patent No. 2,157,537 above referred to, in the direction of arrow Ill insteps equal to the angular distance between; each pocket. The bunches formed on the bunch rolling machine are inserted'by an operator into-any one of the molds which are open at postion I, which corresponds generally from the 12 30" to the 2:30 oclock position of the turretdrum.

bunch shape By providing a plurality of open pockets at the loading position, it is possible to more easily fill the molds, and sufficient time can be allowed so that danger of injury to the operator is reduced to a minimum. The turret is indexed to position II, which approximates the 3 oclock position, where a positioning member 66 actuated through slide 64 by rollers running in tracks 69 and I formed on the interior face of the earns 66 and 63 fixed on drum shaft 50, is moved partly into the mold to seat the bunch located therein.

and is immediately withdrawn. Slide 64 is actuated in a manner similar to that shown in my Patent No. 2,157,537 issued May 9, 1939, for Cigar bunch shaping machine. At station IV, or the 4 oclock position of the turret, which the next point in the indexing thereof, a shaping and compressing member 6I, similar in construction and operation to member 66, is moved completely into the mold on slides 65 to fully shape a bunch therein, and then withdrawn before the turret is indexed to move the next mold into position for cooperation with the shaping member 61. Slides 64 and 65 travel in slots (see Fig. 1) formed in plates 54 and 55.

Station V, where the mold covers 3| are put into place by means of transfer arms I1, in the preferred embodiment, is located prior to the 6 oclock position. The transfer arms 11, which consist of bifurcated central portions or cross heads I80 supported on shaft 56 by blocks I9 rotatable on shaft 50, are actuated by rollers 8|] secured to said arms 11 by means of suitable pins I90 which engage and run in tracks BI formed on the peripheries of cams 60 and. 63. After covers 3I have been applied to their respective mold pockets, they remain thereon during the travel of the turret through approximately 180, or one-half revolution, as shown in Fig. 1. The upper ends of arms 'II lift a cover 3| from one mold 30 while at the same time the lower ends are inserting the previously lifted cover into the diametrically opposite mold. The arms 11 are latched to cams 60, 63 by means described more fully hereinafter, while the latter make one-half a revolution in a counterclockwise direction, indicated by arrow II in Fig. 1, and at the same time because the arms 11 are latched thereto, they necessarily must travel through 180 in the same direction as indicated by arrow I2. Shaft 50 and cams 60 and 53 mounted thereon are rotated continuously in a counterclockwise direction. At the conclusion of each 180 movement, the arms are again moved radially upward in order to operate successive covers of the molds in a similar manner.

As shown in Fig. 2, an ejector plate 56 is slidable within the drum 29, and carries ejector pins 51 which are arranged with ejecting surfaces of bunch shaped contour to lift bunches shaped in pockets 23 of the drum. A cam roller 59 on the plate 56 engages the innermost tracks of cam I50 which serve to control the ejecting movement of the pins 51. All of this structure is similar to that shown and described in my Patent No. 2,157,537.

To align the covers 3| properly while they are carried by the arms I1, the latter are equipped with gauging devices to hold all covers in the same axial position with respect to the mold pockets 23, and with centering devices to keep them axially parallel in that position. The gauging device consists of adjusting screws I4 inserted horizontally into the ends of arms TI and vtions 33 of the covers.

coaxial with the centers of non-rotatably mounted wear-resisting collars 34 on the end projec- These screws, after adjustment to the exact overall length of the covers, are held firmly in position by set screws I5. The centering device consists of bell crank levers I6 pivoted on horizontal pins I! in the ends of arms 11 and held in tension by springs I8 inserted into axial cavities in arms IT, these springs pressing against the radial arms I62a of levers I6. The axial arms I62 of the levers I6 are made with axially extending depressions I66 into which the collars 34 snap when they have entered the mold cover collar supporting pockets formed by the ends34ll of the arms TI and the arms I62 of le- .vers I6 with depressions I60, thereby holding covers 3| securely in exact angular position in the arms 11 and relative to the mold pockets while being transferred.

' Improved mechanism has been provided for more securely latching the transfer arms 11 to the cams 60 and 63 while being rotated by them. This structure consists of lock levers I9 pivotally mounted on pins 20 fixed to the outer surface of the cams, which levers are formed with depressions BIO for locking the rollers 8|] when the latter are in their dwell position on the low points of the cam tracks 8I as shown in Fig. 1. It will be observed that a locking action, which for want of a better expression is termed a toggle" action, is set up by the depressions 8) of the locking levers I9 and cam tracks 8| as shown at Fig. 1 so that during the counterclockwise movement of the arms 11 while latched to lever I9 there can be no possible interruption of the locking operation until roller 25 mounted on lever I9 engages pin 26 and lifts lever I9 out of enagement with rollers 80. The lines AB and BC (Fig. 1a) indicate the two forces which would act to hold the rollers firmly between the cam tracks 8| and the depression 8Ill whenever an obstruction tends to retard the rotary movement of arms 11 and. rollers mounted thereon. The

arm I9 may be considered to constitute one link of a toggle and the pin I of roller 8I0 may be regarded as the fulcrum of the roller BID. The counterclockwise movement of arms H from position V through degrees of travel, therefore, causes roller 80 to be forced along a line through the center of depression 8I6 and pivot 20 so that in effect roller 80 is wedged in depression 8 I 0 until released as above stated. The form of the cam tracks 8I, as shown in Fig. 1, is such that after the empty end of the arms I! is stopped at the cover-removing station of the turret, the rotation of the cam tracks 8I relative to the rollers 80, displacesthe transfer arms I! upwardly, so that the ends 340 of said arms and the arms I62 of levers I6 are in position to admit the collars 34 of one of the covers 3I therebetween during the next advance of the turret. As in my Patent N o. 2,157,537'above referred to, as a result of the continued motion of cams 66 and 63, the high part of the cam surface 8| lifts thetransfer arms I1 to the position shown in Fig. 1, in which the arms become latched to the cams by the lock levers I9 described above. Since the transfer arms 7'! prior to the indexing of the turret have been positioned with their empty cover transferring ends in the path of collars 34, at the conclusion of each turret movement the collars 34 on a cover to be removed will have been located in the grippers on the upper ends of the arms so that the cover is moved outwardly and away from its mold pocket with the outward movement of the transfer arms (see Figs. 1 and 2) Due to the fact that the transfer arms are firmly latched to the cams 60 and 63, during the continued-rotation of the cams, the transfer arms H will travel in unison therewith through 180, or until the outer ends of the transfer arms strike against tracks 81 at which position the transfer arms dwell while the drum 29 is indexed forwardly. The cover 3| which has just been moved into a mold by the transfer arms, is thus removed cir cumferentially from the ends of the arms by the movement of the turret and is thereafter controlled by the tracks 81. In the continued motion of the cams 60 and 63 the high part of the cam surface 8| liftsthe arms 11, thereby carrying the end of the transfer arms which have just discharged a mold covered to the position shown in Fig. 1, at which time the pockets at the upper end of the transfer arms lift a cover; as shown at the top portion of Fig. 1, ready to repeat the cover transfer operation. When the transfer arms are positioned as shown in Fig. 1, the lock levers |9 engage with the rollers 80, then at the lower dwell points of track 8|, and latch the transfer arms to their cams so that on further movement of the cam, the transfer arms will be again moved 180 from cover receiving to cover applying position.

When the cams have completed their next half' turn and when the ends of arms 11, which are shown in their up position in Figs. '1 and 2 have come into engagement with abutments- 86, the rollers 25 of lock levers l9 engage pins 26 inserted into the stationary frames 54 and 55, thereby releasing the transfer arm rollers 80 and allow. ing the cams 60, '63 to turn through the-next180 without the transfer arms. During this free movement of the cams, the rollers 25 of the lock levers l9 may rest on or adjacent the rims |9a of the cams, leaving an adequate space between the lock levers I9 and the tracks 8| for the entrance of the rollers 80 at the end of the free half-turn of the cams. Thelever I9 is not solely dependent on spring 2| for itslocking action. Pin 20 is so positioned that a "toggle action is obtained between lever IS and roller 80 which is locked in depression 8||l of lever l9, the roller 80 being forced more firmly against cam track 8 I, in direct proportion to the increase in resistance of arm 11. Pin 26 is therefore, provided to furnish positive means for lifting lever 9 out of engage-.

ment.

In order to secure perfect alignment of the two transfer arms while carrying the mold covers. 3| from the top to the bottom of drum 29, the abutments 86 at each side of the drum are made in the form of separate plates, radial-1y adjustable by means of 'set screws 83 carried by a projection 84 of bracket 53 and by a lug 85- on gear housing 62, respectively. In setting up the machine, these plates are soadjusted that neither arm 11 isfree toturn before the'other has cleared its plate, henceboth arms commence their'movement from identical angular positions at exactly the sameinstant- To preventdustor tobacco fragments from enterms, into the working parts of the turret at the runways. of arms 11, covers 35 'tensioned by springs 36 are hinged to the tops of frames 54 and 55, these covers being opened by the arms 11 when the latter are raised in their dwell posi tion, and automatically closed as the arms move away therefrom to'transport a cover for applica-- tion to a mold. The closing action is effected by means of springs 36 which continuously urge the covers 35 into closed position. In their closed position, as shown in dotted lines in Fig. 1, projections 31' of the covers 35 fit into cut-outs 316 (Figs. 3 and4) in frames 54 and 55, and serve as stops for the arms 11 against any possible angular retrograde movement when arriving in their dwell position prior to their radial outward motion. The stops 31, being part of the cover 35, are pressed into position by means of spring 36, as soon as the arms 1'! move away from their dwell position to complete a 180 rotation, as mentioned above. the entrance of foreign matter is provided by a set of brushes 32 attached to the lower surfaces of the frames 54 and 55, these brushes being in the paths of the inner surfaces |6| of the pocket portions of arms 11 (see Figs. 2 and 2a) and thus prevent accumulation of tobacco fragments on these surfaces.

The improved mechanism for cutting the overhanging ends of the cigar bunches constitutes the subject matter of my prior application, Serial Number 219,509, of which the present application constitutes a division. The improved trimming mechanism described in said parent application is placed at trimming station III. In brackets 38 on frames 54 and 55' is supported a shaft 40 on which are fastened at the proper distance adjustable to the length of the bunches operated upon, blocks 4| carrying lenticular shapedkni'fe blades 42. It will be noted that blocks 4|, upon which knives 42 are mounted, are shaped more or less like paddles, and due to their proximity tothe chute 1| function after the severing of an end; from a bunch of the pocket, to eject or flip the cut ofi portions of tobacco down the chute and in that way constitute an efficient means for positively disposingof the cut off bunch ends;

The scraps from the trimmed bunches fall into a chute H, removably supported between the {brackets 3-8, Fig. 1. This chute may be secured near the inner end of each of its side wallsby a suitable member 12, to the brackets 38 andnear.

its outer end carries-posts 13 which fit into holes 14 drilled for this purpose into the radial top surface of bracket 53. The movable cutters 42 are so located with respect'to the waste discharging chute that the knives assist in the removal by centrifugal force from the knives, of anytobacco tending to cling thereto which is not removed by the cutting action of the knives themselves. The blocks 4| serve to impart a push to the cut off portions to start the same sliding down. the chute. It has been found that by giving the cut off portions a start down the chute, the portions will continue to travel down the chute H and jammingthereonlwillbe thus avoided. In. this manner the knives are also kept substantially clean at all times.

From chute H, the scrap is delivered into a chute 15, (Fig. 1), supported in the base frame of the cigar machine and terminated in an elbow 15. This elbow enters into a box 18 and. therein is closed by a valve 19 hinged on a pin -82 turnable by a crank arm 89 actuated through a connecting rod 90 from a crank lever 9| held- A further precaution against in engagement with its cam by a spring 92. A- tubular extension of the stationary box 18 enters into a closed drawer 93 slidable in the base of the machine and also having entering into it .an elbow 94 at the end of a pipe 95 connected with the suction systemof the machine. At regular, cyclicintervals, when the valve 19 is opened by the action of lever 9|, the scrap accumulated in elbow 16 is drawn by thesuction into drawer 93 which is emptied from time to time.

The invention above describedmay be varied in construction within the scope of the claims, for the particular device,-selected to illustrate thev invention, is but one of many possible concrete embodiments of the same. The inventionis'not, therefore, to be restricted to the precise details of the structure shown and described.

What is claimed is: 1. In a cigar machine provided with an, intermittently moving series of bunch shaping pockets moving in an endless path, a plurality of covers adapted to be placed in said pockets for shaping bunches located therein, and mechanism for removing a cover from one pocket at one position along said path and applying it to an open pocket at another position on said path; a rotating memher, a cover transfer arm adapted to travel with said member for a part of each revolution thereof, means for latching said arm to said member during said conjointtravel, said means comprising a latch lever carried by said member, a cam follower mounted on said arm and engaging said lever, and means for holding said lever and follower in close engagement. 2. In a cigar machine, the combination with a series of bunch shaping pockets, of mechanism moving said pockets in an endless path and presenting a pluralityof said pockets open for loading, bunch'shaping covers for said pockets, means for removing said pocket covers from said pockets radially of said path at one part of the path, and replacing said covers on pockets at another part of said path, said means comprising transfer arms located adjacent said pockets, grippers comprising spaced members formed in the ehds of each of said arms and arranged to hold the ends of each of said covers, and means forming a part of one of said gripper members for centering said covers during said transfer from one point to another by said grippers. 3. In a cover transfer device for a cigar machine having a turret provided with a series of bunch shaping molds, and covers cooperating therewith for shaping bunches located therein, a rotatable arm, means forming a cover holding gripper on one end of said arm, including a stationary jaw, a resiliently mounted lever movable relative thereto, and means for urging said lever into gripping position to hold a cover clamped therein between said jaw and lever. Q

, 4. A cover transfer device for transferring covers in a cigar machine from one point to another, comprising an arm, a cover transfer gripper formed in one end of said arm, including an extension formed integral with and at right angles to said arm, a pivoted lever cooperatingwith said;

shaping bunches located therein; transfer arms positioned adjacent the ends ofsaid turret, means comprising a pair of relativelymovable opposed spaced gripper :jaws on each of said arms arranged to, admit portions of the cover therebetween for gripping said covers for removing them from said pockets at one position in the path of travel of said turret and replacing them at another position, means foryieldinglyholding one of the jaws on each of said arms'inposition to clamp the admitted cover portions against the opposed jaw, rotatable operating members, and mechanism for locking said arms to said members for travel therewith during a part of the revolution of said members. I

- 6. In a cigar machine, the combination With a multimold bunch;shaping turret for shaping cigar bunches, of a plurality of covers for said molds, mechanism for transferring successive molds to open molds diametrically opposite the point of removal, said mechanism comprising arms located adjacent the ends of said turret, grippers provided with-relatively movable jaws mounted on the ends of said arms, the surface of one of the gripper jaws being provided with a longitudinal groove for seating said cover therein, and means for moving said arms to effect the transfer of said covers.

7. In a cigar bunchshaping machine, the combination with a series of bunch shaping molds, of mechanism for moving said molds in a circular path, bunch shaping covers for said molds, mechanism for removing a cover from a mold at one part of the path andreplacing it on a pocket at another part of the path, said mechanism including transfer arms positioned to extend from one cover engaging part of the path to another part thereof diametrically opposite, gripper members fixedly formed onthe opposite ends of each arm, means coactingwith each of said membars to hold an end of said cover yieldingly against said gripper members during their transfer from one part of the path tothe other, and means for imparting transverse and swinging motion tosaid arms to effect their transfer.

8. In a cigar machine provided with a series of cigar shaping molds moving in an endless path,

a plurality of covers arranged to be placed in said molds for shaping-bunches located therein, and mechanism for removing 'a cover from one mold at one position along said-path and applying it to an open mold at another position along said path; a rotating member, a cover transfer arm adapted to travel with said member for a part of each revolution thereofygrippers formed on the end of said arm, said grippers having resiliently mounted thereon means'for yieldingly clamping saidcovers for transfer from one of said positions to another, means for latching said-arm to said member including a lever carried by said member, a cam follower mounted on said arm, and means for holding said lever and follower in close engagement.

9. In a cigar machine, the combination with a carrier intermittently'rotating in a circular path, said. carrier being provided with a plurality of molds, and a plurality of mold covers; mecha nismfor removing'a-cover from .a'mold at one part of the path, and replacing said cover on another mold at another part of-said path, said mechanism including an arm extending from one position along said path to a diametrically opposite one, operating means forgiving said arm movement transverse to said'path toremove said covers, and swinging movement to translate said covers along said path, and means separate from said operating means to prevent retrograde movement of said arm at the conclusion of said swin ing movement.

10. In a cigar machine, the combination with a carrier provided with a plurality of bunch shaping molds, bunch shaping covers for said molds, a removal station where covers are removed from said molds, a station where covers are applied to molds, means for transferring covers fromsaid removal station to said applying station, and a pivotally mounted guard plate located at said removal station for preventing access of foreign material to parts of said machine.

11. In a cigar machine, the combination with an intermittently rotating carrier moving in a circular path, and provided with a plurality of bunch shaping molds, bunch covers for said molds, a cover removing and a cover applying station located at spaced points along said path, transfer arms operative at said first-named station to remove a cover and transfer it with a transverse and a swinging movement from said removing station to said applying station, a pivoted guard plate for preventing the access of waste into parts of said machine, and means mounted on said plate for preventing the retrograde movement of said arms following their movement to said applying station.

12. In a cigar machine provided with an intermittently moving series of bunch shaping pockets moving in an endless path, a plurality of covers adapted to be placed in said pockets for shaping bunches located therein, and mechanism for removing a cover from one pocket at onerposition along said path and applying it to an open pocket at another position on said path, a rotating member, a cover transfer arm adapted to travel with said member for a part of each revolution thereof, means for latching said armto said member during said conjoint travel, and separate means engaging with said latching means for releasing said latching means at the completion of said conjoint travel.

13. In a cigar machine provided with an intermittently moving series of bunch shaping pockets moving in an endless path, a plurality of covers adapted to be placed in said pockets for shaping bunches located therein, mechanism for removing a cover from one pocket at one position along said path and applying it to an open pocket at another position on said path, a rotating member, a cover transfer arm adapted to travel with said member for a part of each revolution thereof, means for latching said arm to said member during said conjoint travel, said means comprising a latch lever carried by said member, a cam follower mounted on said arm and engaging said lever, means for unlatching said arm at the end of said conjoint travel, and means for holding said lever andfollower in close engagement.

14. In a cigar machine having a turret provided with a series of bunch shaping molds and covers cooperating therewith for shaping bunches located therein, a rotating cam, a rotating arm for gripping said covers to transfer them from one bunch shaping mold to another bunch shaping mold, a cam follower attached to said arm for actuating said arm, and means for locking and unlocking said cam follower to and from said rotating cam.

15. In a cigar machine having a turret provided with a series of bunch shaping mold pockets and covers cooperating therewith for shaping cigar bunches located in said pockets, a continuously revolving member, a transfer arm for engaging and transferring said covers from one bunch shaping mold to another bunch shaping mold, and means for locking said transfer arm to said continuously revolving member during certain predetermined periods of the machine cycle.

16. In a cigar machine having a turret provided with a series of bunch shaping mold pockets and covers cooperating therewith for shaping cigar bunches located in said pockets, a continuously revolving member, a transfer arm for engaging and transferring said covers from one bunch shaping mold to another bunch shaping mold, means for reciprocating said arm at a predetermined period of the machine cycle to replace one mold cover on a pocket and remove another mold cover from anothermold pocket, and a locking device for locking said transfer arm to said revolving member for a predetermined period during each machine cycle to cause the covers held by said arm to be transferred.

17. A cigar machine having a turret, a plurality of bunch shaping mold pockets connected thereto, covers cooperating with said pockets for shaping cigar bunches located therein, a continuously revolving member, a transfer arm for engaging and transferring said covers from one bunch shaping mold to another bunch shaping mold, and a toggle device for locking said transfer arm to said continuously revolving member during pre- 7 determined periods of the machine cycle.

18. In a device for removing mold covers from the mold pockets at one station of a multimold bunch shaping turret, said mold covers having projecting ends carrying cylindrical parts, the combination with a plurality of members arranged to engage one side of the cylindrical parts on the projecting ends of the mold cover at said station of the turret, yielding grippers supported by said members and opposed to the portions of said members engaging said cylindrical parts and adapted to engage the side of said cylindrical parts which is opposite to the side engaged by said members and thereby clamp the cylindrical parts between said members and grippers, means supported by said members for preventing substantial longitudinal displacement of said covers while they are being removed, and means for operating said members to remove from its pocket the cover whose cylindrical parts are clamped between said members and grippers.

19. In a device for removing mold covers from the mold pockets at one station of a multimold bunch shaping turret, said mold covers having projecting ends carrying cylindrical parts, the combination with a plurality of members arranged to engage one side of the cylindrical parts on the projecting ends of the mold cover at said station of the turret, yielding grippers supported by said members and opposed to the portions of said members engaging said cylindrical parts and adapted to engage the side of said cylindrical parts which is opposite to the side engaged by said members and thereby clamp the cylindrical parts between said members and grippers, and means for operating said members to remove from its pocket the cover whose cylindrical parts are clamped between said members and grippers.

HENRY H. WHEELER.

CERTIFICATE OF CORRECTION.

Patent Ne. 2,557,569. September 5, 19m.

HENRY H. WHEELER.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page it, second column, line 20, claim 6, before the word "molds" first occurrence, insert -cdvers from successiveand that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this lhth day of November, 1). 191m.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

